A Targaryen 'Game of Thrones' Prequel Is in the Works 'Game of Thrones' author <br />George R.R. Martin is writing <br />the script for the program's pilot. According to multiple outlets, it is close to receiving a TV order. The show will be an adaptation of Martin's book, 'Fire & Blood.' 'Fire and Blood' mainly focuses on the Targaryen family and how <br />they came to rule. Its setting will be 300 years before everything that transpired <br />on the show. That places it after the other planned spin-off that <br />HBO is working on. The show, which does not yet have an official title, is currently <br />in production.